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AUSCERT Security Bulletin
ASB-2019.0212
Oracle Java SE
17 July 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: Oracle Java SE
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Modify Arbitrary Files -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-7317 CVE-2019-2842 CVE-2019-2821
CVE-2019-2818 CVE-2019-2816 CVE-2019-2786
CVE-2019-2769 CVE-2019-2766 CVE-2019-2762
CVE-2019-2745
Member content until: Friday, August 16 2019
OVERVIEW
Multiple vulnerabilities have been identified in :
o Oracle Java SE, versions 7u221, 8u212, 11.0.3, 12.0.1
o Oracle Java SE Embedded, version 8u211
[1]
IMPACT
The vendor has provided the following information regarding the
vulnerabilities:
"This Critical Patch Update contains 10 new security fixes for Oracle
Java SE. 9 of these vulnerabilities may be remotely exploitable
without authentication, i.e., may be exploited over a network without
requiring user credentials." [1]
CVE-2019-7317
6.8 AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H
Difficult to exploit vulnerability allows unauthenticated attacker
with network access via multiple protocols to compromise the affected
system. Successful attacks require human interaction from a person
other than the attacker. Successful attacks of this vulnerability can
result in unauthorized creation, deletion or modification access to
critical data or all the affected system's accessible data and
unauthorized ability to cause a hang or frequently repeatable crash
(complete DOS) of the affected system.
Affects:
o Java SE, Java SE Embedded Java SE: 7u221, 8u212, 11.0.3,
12.0.1; Java SE Embedded: 8u211
CVE-2019-2821
5.3 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Difficult to exploit vulnerability allows unauthenticated attacker
with network access via TLS to compromise the affected system.
Successful attacks require human interaction from a person other than
the attacker. Successful attacks of this vulnerability can result in
unauthorized access to critical data or complete access to all the
affected system's accessible data.
Affects:
o Java SE Java SE: 11.0.3, 12.0.1
CVE-2019-2762
5.3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Easily exploitable vulnerability allows unauthenticated attacker with
network access via multiple protocols to compromise the affected
system. Successful attacks of this vulnerability can result in
unauthorized ability to cause a partial denial of service (partial
DOS) of the affected system.
Affects:
o Java SE, Java SE Embedded Java SE: 7u221, 8u212, 11.0.3,
12.0.1; Java SE Embedded: 8u211
CVE-2019-2769
5.3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Easily exploitable vulnerability allows unauthenticated attacker with
network access via multiple protocols to compromise the affected
system. Successful attacks of this vulnerability can result in
unauthorized ability to cause a partial denial of service (partial
DOS) of the affected system.
Affects:
o Java SE, Java SE Embedded Java SE: 7u221, 8u212, 11.0.3,
12.0.1; Java SE Embedded: 8u211
CVE-2019-2745
5.1 AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Difficult to exploit vulnerability allows unauthenticated attacker
with logon to the infrastructure where the affected system executes
to compromise the affected system. Successful attacks of this
vulnerability can result in unauthorized access to critical data or
complete access to all the affected system's accessible data.
Affects:
o Java SE Java SE: 7u221, 8u212, 11.0.3
CVE-2019-2816
4.8 AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Difficult to exploit vulnerability allows unauthenticated attacker
with network access via multiple protocols to compromise the affected
system. Successful attacks of this vulnerability can result in
unauthorized update, insert or delete access to some of the affected
system's accessible data as well as unauthorized read access to a
subset of the affected system's accessible data.
Affects:
o Java SE, Java SE Embedded Java SE: 7u221, 8u212, 11.0.3,
12.0.1; Java SE Embedded: 8u211
CVE-2019-2842
3.7 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Difficult to exploit vulnerability allows unauthenticated attacker
with network access via multiple protocols to compromise the affected
system. Successful attacks of this vulnerability can result in
unauthorized ability to cause a partial denial of service (partial
DOS) of the affected system.
Affects:
o Java SE Java SE: 8u212
CVE-2019-2786
3.4 AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N
Difficult to exploit vulnerability allows unauthenticated attacker
with network access via multiple protocols to compromise the affected
system. Successful attacks require human interaction from a person
other than the attacker and while the vulnerability is in the
affected system, attacks may significantly impact additional
products. Successful attacks of this vulnerability can result in
unauthorized read access to a subset of the affected system's
accessible data.
Affects:
o Java SE, Java SE Embedded Java SE: 8u212, 11.0.3, 12.0.1; Java
SE Embedded: 8u211
CVE-2019-2818
3.1 AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Difficult to exploit vulnerability allows unauthenticated attacker
with network access via multiple protocols to compromise the affected
system. Successful attacks require human interaction from a person
other than the attacker. Successful attacks of this vulnerability can
result in unauthorized read access to a subset of the affected
system's accessible data.
Affects:
o Java SE Java SE: 11.0.3, 12.0.1
CVE-2019-2766
3.1 AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Difficult to exploit vulnerability allows unauthenticated attacker
with network access via multiple protocols to compromise the affected
system. Successful attacks require human interaction from a person
other than the attacker. Successful attacks of this vulnerability can
result in unauthorized read access to a subset of the affected
system's accessible data.
Affects:
o Java SE, Java SE Embedded Java SE: 7u221, 8u212, 11.0.3,
12.0.1; Java SE Embedded: 8u211
MITIGATION
Oracle states:
"Due to the threat posed by a successful attack, Oracle strongly
recommends that customers apply CPU fixes as soon as possible. Until
you apply the CPU fixes, it may be possible to reduce the risk of
successful attack by blocking network protocols required by an
attack. For attacks that require certain privileges or access to
certain packages, removing the privileges or the ability to access
the packages from users that do not need the privileges may help
reduce the risk of successful attack. Both approaches may break
application functionality, so Oracle strongly recommends that
customers test changes on non-production systems. Neither approach
should be considered a long-term solution as neither corrects the
underlying problem." [1]
REFERENCES
[1] Oracle Critical Patch Update Advisory - July 2019
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
[2] Text Form of Oracle Critical Patch Update - July 2019 Risk Matrices
https://www.oracle.com/technetwork/security-advisory/cpujul2019verbose-5072838.html
AusCERT has made every effort to ensure that the information contained
in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.
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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
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On call after hours for member emergencies only.
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